headers_list

Function • Return type changed in PHP 8.0

Returns a list of response headers sent (or ready to send).

PHP 5

PHP 7

Improved

PHP 8.1

PHP 8.2-8.3

PHP 8.4

PHP 8.5

PHP 8.6

`headers_list` Function synopsis

headers_list(): array

Parameters

headers_list does not take any parameters.

Return value

Typearray

Returns a numerically indexed array of headers.

Changes to the `headers_list` Function

PHP 8.0

Return type added: array

- headers_list()
+ headers_list(): array

`headers_list` Function Availability

PHP Version	Availability
PHP 8.6Upcoming Release	Yes
PHP 8.5Supported (Latest)	Yes
PHP 8.4Supported	Yes
PHP 8.3Security-Fixes Only	Yes
PHP 8.2Security-Fixes Only	Yes
PHP 8.1Unsupported	Yes
PHP 8.0Unsupported	Yes
PHP 7.4Unsupported	Yes
PHP 7.3Unsupported	Yes
PHP 7.2Unsupported	Yes
PHP 7.1Unsupported	Yes
PHP 7.0Unsupported	Yes
PHP 5.6Unsupported	Yes
PHP 5.5Unsupported	Yes
PHP 5.4Unsupported	Yes
PHP 5.3Unsupported	Yes